#include <stdio.h>
#include <string.h>

int main()
{
	char s[100];
	for (int i = 0; i < 100; i++)
	{
		scanf("%c", &s[i]);
		if (s[i] == '\n')
		{
			s[i] == '\0';
			break;
		}
	}

	int a = 0, b = 0, c = 0;
	int t = 0;
	for (int i = 0; i < strlen(s); i++)
	{
		if (s[i] == '(')
		{
			a++;
			for (int j = t + 1; j < strlen(s); j++)
			{
				if (s[j] == ')')
				{
					b++;
					t = j;
					break;
				}
			}
		} else {
			if (s[i] == ')')
				c++;
		}
	}

	printf("a = %d, b = %d, c = %d\n", a, b, c);
	printf("%d\n", (a == b && c == b) ? 1 : 0);
	return 0;
}